recensies: Shipped fast. This is a cool device for just having fun, but it will be useful for rating the oven Im building for melting glass and it can tell you were air leaks are for insulating the house.

recensies: Shipped fast. This is a cool device for just having fun, but it will be useful for rating the oven Im building for melting glass and it can tell you were air leaks are for insulating the house.